The IACV-air regulator is used on CA16DE, CA18DE, GA16DE and SR20DE engines to provide increased idle speed during cold engine operation. The valve contains bimetal spring, that is connected to a rotary shutter. The shutter opens, when the engine is cold, allowing additional air to bypass the throttle plates, thus increasing the engine speed. During warm-up, an electrical current supplied to the valve, heats the bimetal spring, closing off the port.

TESTING

See Figures 3 and 4

Fig. Fig. 3: Connect an ohmmeter across the air regulator terminals, as shown